<!DOCTYPE html>
<html lang="zh-Hans">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>CSS3 - 手风琴</title>
    <link rel="stylesheet" href="./css/normalized.css">
    <link rel="stylesheet" href="./css/index.css">
</head>
<body>

    <div class="container">
        <h1 class="title">商用照明能力</h1>
        <ul class="ct-list">
            <li>
                <img src="./images/pic01.jpg" alt="">
                <div class="mask"></div>
            </li>
            <li>
                <img src="./images/pic02.jpg" alt="">
                <div class="mask"></div>
            </li>
            <li>
                <img src="./images/pic03.jpg" alt="">
                <div class="mask"></div>
            </li>
            <li>
                <img src="./images/pic04.jpg" alt="">
                <div class="mask"></div>
            </li>
        </ul>
    </div>


</body>
</html>